Members/tobaru/cbc/CbC_llvm: lib/CodeGen/AsmPrinter/DwarfUnit.h comparison

comparison lib/CodeGen/AsmPrinter/DwarfUnit.h @ 33:e4204d083e25

LLVM 3.5

author	Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date	Thu, 12 Dec 2013 14:32:10 +0900
parents
children	54457678186b

comparison

equal deleted inserted replaced

-:f783a2dd24b1
+:e4204d083e25
+//===-- llvm/CodeGen/DwarfUnit.h - Dwarf Compile Unit ---*- C++ -*--===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains support for writing dwarf compile unit.
+//
+//===----------------------------------------------------------------------===//
+#ifndef CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
+#define CODEGEN_ASMPRINTER_DWARFCOMPILEUNIT_H
+#include "DIE.h"
+#include "DwarfDebug.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/Optional.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCSection.h"
+namespace llvm {
+class MachineLocation;
+class MachineOperand;
+class ConstantInt;
+class ConstantFP;
+class DbgVariable;
+// Data structure to hold a range for range lists.
+class RangeSpan {
+public:
+RangeSpan(MCSymbol *S, MCSymbol *E) : Start(S), End(E) {}
+const MCSymbol *getStart() const { return Start; }
+const MCSymbol *getEnd() const { return End; }
+private:
+const MCSymbol *Start, *End;
+};
+class RangeSpanList {
+private:
+// Index for locating within the debug_range section this particular span.
+MCSymbol *RangeSym;
+// List of ranges.
+SmallVector<RangeSpan, 2> Ranges;
+public:
+RangeSpanList(MCSymbol *Sym) : RangeSym(Sym) {}
+MCSymbol *getSym() const { return RangeSym; }
+const SmallVectorImpl<RangeSpan> &getRanges() const { return Ranges; }
+void addRange(RangeSpan Range) { Ranges.push_back(Range); }
+};
+//===----------------------------------------------------------------------===//
+/// Unit - This dwarf writer support class manages information associated
+/// with a source file.
+class DwarfUnit {
+protected:
+/// UniqueID - a numeric ID unique among all CUs in the module
+unsigned UniqueID;
+/// Node - MDNode for the compile unit.
+DICompileUnit Node;
+/// Unit debug information entry.
+const OwningPtr<DIE> UnitDie;
+/// Offset of the UnitDie from beginning of debug info section.
+unsigned DebugInfoOffset;
+/// Asm - Target of Dwarf emission.
+AsmPrinter *Asm;
+// Holders for some common dwarf information.
+DwarfDebug *DD;
+DwarfFile *DU;
+/// IndexTyDie - An anonymous type for index type.  Owned by UnitDie.
+DIE *IndexTyDie;
+/// MDNodeToDieMap - Tracks the mapping of unit level debug information
+/// variables to debug information entries.
+DenseMap<const MDNode *, DIE *> MDNodeToDieMap;
+/// MDNodeToDIEEntryMap - Tracks the mapping of unit level debug information
+/// descriptors to debug information entries using a DIEEntry proxy.
+DenseMap<const MDNode *, DIEEntry *> MDNodeToDIEEntryMap;
+/// GlobalNames - A map of globally visible named entities for this unit.
+StringMap<const DIE *> GlobalNames;
+/// GlobalTypes - A map of globally visible types for this unit.
+StringMap<const DIE *> GlobalTypes;
+/// AccelNames - A map of names for the name accelerator table.
+StringMap<std::vector<const DIE *> > AccelNames;
+/// AccelObjC - A map of objc spec for the objc accelerator table.
+StringMap<std::vector<const DIE *> > AccelObjC;
+/// AccelNamespace - A map of names for the namespace accelerator table.
+StringMap<std::vector<const DIE *> > AccelNamespace;
+/// AccelTypes - A map of names for the type accelerator table.
+StringMap<std::vector<std::pair<const DIE *, unsigned> > > AccelTypes;
+/// DIEBlocks - A list of all the DIEBlocks in use.
+std::vector<DIEBlock *> DIEBlocks;
+/// ContainingTypeMap - This map is used to keep track of subprogram DIEs that
+/// need DW_AT_containing_type attribute. This attribute points to a DIE that
+/// corresponds to the MDNode mapped with the subprogram DIE.
+DenseMap<DIE *, const MDNode *> ContainingTypeMap;
+// List of range lists for a given compile unit, separate from the ranges for
+// the CU itself.
+SmallVector<RangeSpanList, 1> CURangeLists;
+// DIEValueAllocator - All DIEValues are allocated through this allocator.
+BumpPtrAllocator DIEValueAllocator;
+// DIEIntegerOne - A preallocated DIEValue because 1 is used frequently.
+DIEInteger *DIEIntegerOne;
+/// The section this unit will be emitted in.
+const MCSection *Section;
+/// A label at the start of the non-dwo section related to this unit.
+MCSymbol *SectionSym;
+/// The start of the unit within its section.
+MCSymbol *LabelBegin;
+/// The end of the unit within its section.
+MCSymbol *LabelEnd;
+/// The label for the start of the range sets for the elements of this unit.
+MCSymbol *LabelRange;
+DwarfUnit(unsigned UID, DIE *D, DICompileUnit CU, AsmPrinter *A,
+DwarfDebug *DW, DwarfFile *DWU);
+public:
+virtual ~DwarfUnit();
+/// Pass in the SectionSym even though we could recreate it in every compile
+/// unit (type units will have actually distinct symbols once they're in
+/// comdat sections).
+void initSection(const MCSection *Section, MCSymbol *SectionSym) {
+assert(!this->Section);
+this->Section = Section;
+this->SectionSym = SectionSym;
+this->LabelBegin =
+Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
+this->LabelEnd =
+Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
+this->LabelRange = Asm->GetTempSymbol("gnu_ranges", getUniqueID());
+}
+const MCSection *getSection() const {
+assert(Section);
+return Section;
+}
+MCSymbol *getSectionSym() const {
+assert(Section);
+return SectionSym;
+}
+MCSymbol *getLabelBegin() const {
+assert(Section);
+return LabelBegin;
+}
+MCSymbol *getLabelEnd() const {
+assert(Section);
+return LabelEnd;
+}
+MCSymbol *getLabelRange() const {
+assert(Section);
+return LabelRange;
+}
+// Accessors.
+unsigned getUniqueID() const { return UniqueID; }
+virtual uint16_t getLanguage() const = 0;
+DICompileUnit getNode() const { return Node; }
+DIE *getUnitDie() const { return UnitDie.get(); }
+const StringMap<const DIE *> &getGlobalNames() const { return GlobalNames; }
+const StringMap<const DIE *> &getGlobalTypes() const { return GlobalTypes; }
+const StringMap<std::vector<const DIE *> > &getAccelNames() const {
+return AccelNames;
+}
+const StringMap<std::vector<const DIE *> > &getAccelObjC() const {
+return AccelObjC;
+}
+const StringMap<std::vector<const DIE *> > &getAccelNamespace() const {
+return AccelNamespace;
+}
+const StringMap<std::vector<std::pair<const DIE *, unsigned> > > &
+getAccelTypes() const {
+return AccelTypes;
+}
+unsigned getDebugInfoOffset() const { return DebugInfoOffset; }
+void setDebugInfoOffset(unsigned DbgInfoOff) { DebugInfoOffset = DbgInfoOff; }
+/// hasContent - Return true if this compile unit has something to write out.
+bool hasContent() const { return !UnitDie->getChildren().empty(); }
+/// addRangeList - Add an address range list to the list of range lists.
+void addRangeList(RangeSpanList Ranges) { CURangeLists.push_back(Ranges); }
+/// getRangeLists - Get the vector of range lists.
+const SmallVectorImpl<RangeSpanList> &getRangeLists() const {
+return CURangeLists;
+}
+SmallVectorImpl<RangeSpanList> &getRangeLists() { return CURangeLists; }
+/// getParentContextString - Get a string containing the language specific
+/// context for a global name.
+std::string getParentContextString(DIScope Context) const;
+/// addGlobalName - Add a new global entity to the compile unit.
+///
+void addGlobalName(StringRef Name, DIE *Die, DIScope Context);
+/// addAccelName - Add a new name to the name accelerator table.
+void addAccelName(StringRef Name, const DIE *Die);
+/// addAccelObjC - Add a new name to the ObjC accelerator table.
+void addAccelObjC(StringRef Name, const DIE *Die);
+/// addAccelNamespace - Add a new name to the namespace accelerator table.
+void addAccelNamespace(StringRef Name, const DIE *Die);
+/// addAccelType - Add a new type to the type accelerator table.
+void addAccelType(StringRef Name, std::pair<const DIE *, unsigned> Die);
+/// getDIE - Returns the debug information entry map slot for the
+/// specified debug variable. We delegate the request to DwarfDebug
+/// when the MDNode can be part of the type system, since DIEs for
+/// the type system can be shared across CUs and the mappings are
+/// kept in DwarfDebug.
+DIE *getDIE(DIDescriptor D) const;
+/// getDIEBlock - Returns a fresh newly allocated DIEBlock.
+DIEBlock *getDIEBlock() { return new (DIEValueAllocator) DIEBlock(); }
+/// insertDIE - Insert DIE into the map. We delegate the request to DwarfDebug
+/// when the MDNode can be part of the type system, since DIEs for
+/// the type system can be shared across CUs and the mappings are
+/// kept in DwarfDebug.
+void insertDIE(DIDescriptor Desc, DIE *D);
+/// addDie - Adds or interns the DIE to the compile unit.
+///
+void addDie(DIE *Buffer) { UnitDie->addChild(Buffer); }
+/// addFlag - Add a flag that is true to the DIE.
+void addFlag(DIE *Die, dwarf::Attribute Attribute);
+/// addUInt - Add an unsigned integer attribute data and value.
+void addUInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
+uint64_t Integer);
+void addUInt(DIEBlock *Block, dwarf::Form Form, uint64_t Integer);
+/// addSInt - Add an signed integer attribute data and value.
+void addSInt(DIE *Die, dwarf::Attribute Attribute, Optional<dwarf::Form> Form,
+int64_t Integer);
+void addSInt(DIEBlock *Die, Optional<dwarf::Form> Form, int64_t Integer);
+/// addString - Add a string attribute data and value.
+void addString(DIE *Die, dwarf::Attribute Attribute, const StringRef Str);
+/// addLocalString - Add a string attribute data and value.
+void addLocalString(DIE *Die, dwarf::Attribute Attribute,
+const StringRef Str);
+/// addExpr - Add a Dwarf expression attribute data and value.
+void addExpr(DIEBlock *Die, dwarf::Form Form, const MCExpr *Expr);
+/// addLabel - Add a Dwarf label attribute data and value.
+void addLabel(DIE *Die, dwarf::Attribute Attribute, dwarf::Form Form,
+const MCSymbol *Label);
+void addLabel(DIEBlock *Die, dwarf::Form Form, const MCSymbol *Label);
+/// addSectionLabel - Add a Dwarf section label attribute data and value.
+///
+void addSectionLabel(DIE *Die, dwarf::Attribute Attribute,
+const MCSymbol *Label);
+/// addSectionOffset - Add an offset into a section attribute data and value.
+///
+void addSectionOffset(DIE *Die, dwarf::Attribute Attribute, uint64_t Integer);
+/// addOpAddress - Add a dwarf op address data and value using the
+/// form given and an op of either DW_FORM_addr or DW_FORM_GNU_addr_index.
+void addOpAddress(DIEBlock *Die, const MCSymbol *Label);
+/// addSectionDelta - Add a label delta attribute data and value.
+void addSectionDelta(DIE *Die, dwarf::Attribute Attribute, const MCSymbol *Hi,
+const MCSymbol *Lo);
+/// addDIEEntry - Add a DIE attribute data and value.
+void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIE *Entry);
+/// addDIEEntry - Add a DIE attribute data and value.
+void addDIEEntry(DIE *Die, dwarf::Attribute Attribute, DIEEntry *Entry);
+/// addBlock - Add block data.
+void addBlock(DIE *Die, dwarf::Attribute Attribute, DIEBlock *Block);
+/// addSourceLine - Add location information to specified debug information
+/// entry.
+void addSourceLine(DIE *Die, DIVariable V);
+void addSourceLine(DIE *Die, DIGlobalVariable G);
+void addSourceLine(DIE *Die, DISubprogram SP);
+void addSourceLine(DIE *Die, DIType Ty);
+void addSourceLine(DIE *Die, DINameSpace NS);
+void addSourceLine(DIE *Die, DIObjCProperty Ty);
+/// addAddress - Add an address attribute to a die based on the location
+/// provided.
+void addAddress(DIE *Die, dwarf::Attribute Attribute,
+const MachineLocation &Location, bool Indirect = false);
+/// addConstantValue - Add constant value entry in variable DIE.
+void addConstantValue(DIE *Die, const MachineOperand &MO, DIType Ty);
+void addConstantValue(DIE *Die, const ConstantInt *CI, bool Unsigned);
+void addConstantValue(DIE *Die, const APInt &Val, bool Unsigned);
+/// addConstantFPValue - Add constant value entry in variable DIE.
+void addConstantFPValue(DIE *Die, const MachineOperand &MO);
+void addConstantFPValue(DIE *Die, const ConstantFP *CFP);
+/// addTemplateParams - Add template parameters in buffer.
+void addTemplateParams(DIE &Buffer, DIArray TParams);
+/// addRegisterOp - Add register operand.
+void addRegisterOp(DIEBlock *TheDie, unsigned Reg);
+/// addRegisterOffset - Add register offset.
+void addRegisterOffset(DIEBlock *TheDie, unsigned Reg, int64_t Offset);
+/// addComplexAddress - Start with the address based on the location provided,
+/// and generate the DWARF information necessary to find the actual variable
+/// (navigating the extra location information encoded in the type) based on
+/// the starting location.  Add the DWARF information to the die.
+void addComplexAddress(const DbgVariable &DV, DIE *Die,
+dwarf::Attribute Attribute,
+const MachineLocation &Location);
+// FIXME: Should be reformulated in terms of addComplexAddress.
+/// addBlockByrefAddress - Start with the address based on the location
+/// provided, and generate the DWARF information necessary to find the
+/// actual Block variable (navigating the Block struct) based on the
+/// starting location.  Add the DWARF information to the die.  Obsolete,
+/// please use addComplexAddress instead.
+void addBlockByrefAddress(const DbgVariable &DV, DIE *Die,
+dwarf::Attribute Attribute,
+const MachineLocation &Location);
+/// addVariableAddress - Add DW_AT_location attribute for a
+/// DbgVariable based on provided MachineLocation.
+void addVariableAddress(const DbgVariable &DV, DIE *Die,
+MachineLocation Location);
+/// addType - Add a new type attribute to the specified entity. This takes
+/// and attribute parameter because DW_AT_friend attributes are also
+/// type references.
+void addType(DIE *Entity, DIType Ty,
+dwarf::Attribute Attribute = dwarf::DW_AT_type);
+/// getOrCreateNameSpace - Create a DIE for DINameSpace.
+DIE *getOrCreateNameSpace(DINameSpace NS);
+/// getOrCreateSubprogramDIE - Create new DIE using SP.
+DIE *getOrCreateSubprogramDIE(DISubprogram SP);
+/// getOrCreateTypeDIE - Find existing DIE or create new DIE for the
+/// given DIType.
+DIE *getOrCreateTypeDIE(const MDNode *N);
+/// getOrCreateContextDIE - Get context owner's DIE.
+DIE *createTypeDIE(DICompositeType Ty);
+/// getOrCreateContextDIE - Get context owner's DIE.
+DIE *getOrCreateContextDIE(DIScope Context);
+/// constructContainingTypeDIEs - Construct DIEs for types that contain
+/// vtables.
+void constructContainingTypeDIEs();
+/// constructVariableDIE - Construct a DIE for the given DbgVariable.
+DIE *constructVariableDIE(DbgVariable &DV, bool isScopeAbstract);
+/// Create a DIE with the given Tag, add the DIE to its parent, and
+/// call insertDIE if MD is not null.
+DIE *createAndAddDIE(unsigned Tag, DIE &Parent,
+DIDescriptor N = DIDescriptor());
+/// Compute the size of a header for this unit, not including the initial
+/// length field.
+unsigned getHeaderSize() const {
+return sizeof(int16_t) + // DWARF version number
+sizeof(int32_t) + // Offset Into Abbrev. Section
+sizeof(int8_t);   // Pointer Size (in bytes)
+}
+/// Emit the header for this unit, not including the initial length field.
+void emitHeader(const MCSection *ASection, const MCSymbol *ASectionSym) const;
+protected:
+/// getOrCreateStaticMemberDIE - Create new static data member DIE.
+DIE *getOrCreateStaticMemberDIE(DIDerivedType DT);
+private:
+/// constructTypeDIE - Construct basic type die from DIBasicType.
+void constructTypeDIE(DIE &Buffer, DIBasicType BTy);
+/// constructTypeDIE - Construct derived type die from DIDerivedType.
+void constructTypeDIE(DIE &Buffer, DIDerivedType DTy);
+/// constructTypeDIE - Construct type DIE from DICompositeType.
+void constructTypeDIE(DIE &Buffer, DICompositeType CTy);
+/// constructSubrangeDIE - Construct subrange DIE from DISubrange.
+void constructSubrangeDIE(DIE &Buffer, DISubrange SR, DIE *IndexTy);
+/// constructArrayTypeDIE - Construct array type DIE from DICompositeType.
+void constructArrayTypeDIE(DIE &Buffer, DICompositeType CTy);
+/// constructEnumTypeDIE - Construct enum type DIE from DIEnumerator.
+void constructEnumTypeDIE(DIE &Buffer, DICompositeType CTy);
+/// constructMemberDIE - Construct member DIE from DIDerivedType.
+void constructMemberDIE(DIE &Buffer, DIDerivedType DT);
+/// constructTemplateTypeParameterDIE - Construct new DIE for the given
+/// DITemplateTypeParameter.
+void constructTemplateTypeParameterDIE(DIE &Buffer,
+DITemplateTypeParameter TP);
+/// constructTemplateValueParameterDIE - Construct new DIE for the given
+/// DITemplateValueParameter.
+void constructTemplateValueParameterDIE(DIE &Buffer,
+DITemplateValueParameter TVP);
+/// getLowerBoundDefault - Return the default lower bound for an array. If the
+/// DWARF version doesn't handle the language, return -1.
+int64_t getDefaultLowerBound() const;
+/// getDIEEntry - Returns the debug information entry for the specified
+/// debug variable.
+DIEEntry *getDIEEntry(const MDNode *N) const {
+return MDNodeToDIEEntryMap.lookup(N);
+}
+/// insertDIEEntry - Insert debug information entry into the map.
+void insertDIEEntry(const MDNode *N, DIEEntry *E) {
+MDNodeToDIEEntryMap.insert(std::make_pair(N, E));
+}
+// getIndexTyDie - Get an anonymous type for index type.
+DIE *getIndexTyDie() { return IndexTyDie; }
+// setIndexTyDie - Set D as anonymous type for index which can be reused
+// later.
+void setIndexTyDie(DIE *D) { IndexTyDie = D; }
+/// createDIEEntry - Creates a new DIEEntry to be a proxy for a debug
+/// information entry.
+DIEEntry *createDIEEntry(DIE *Entry);
+/// resolve - Look in the DwarfDebug map for the MDNode that
+/// corresponds to the reference.
+template <typename T> T resolve(DIRef<T> Ref) const {
+return DD->resolve(Ref);
+}
+/// If this is a named finished type then include it in the list of types for
+/// the accelerator tables.
+void updateAcceleratorTables(DIScope Context, DIType Ty, const DIE *TyDIE);
+};
+class DwarfCompileUnit : public DwarfUnit {
+public:
+DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node, AsmPrinter *A,
+DwarfDebug *DW, DwarfFile *DWU);
+/// createGlobalVariableDIE - create global variable DIE.
+void createGlobalVariableDIE(DIGlobalVariable GV);
+/// addLabelAddress - Add a dwarf label attribute data and value using
+/// either DW_FORM_addr or DW_FORM_GNU_addr_index.
+void addLabelAddress(DIE *Die, dwarf::Attribute Attribute, MCSymbol *Label);
+uint16_t getLanguage() const LLVM_OVERRIDE { return getNode().getLanguage(); }
+};
+class DwarfTypeUnit : public DwarfUnit {
+private:
+uint16_t Language;
+public:
+DwarfTypeUnit(unsigned UID, DIE *D, uint16_t Language, AsmPrinter *A,
+DwarfDebug *DW, DwarfFile *DWU);
+uint16_t getLanguage() const LLVM_OVERRIDE { return Language; }
+};
+} // end llvm namespace
+#endif

Mercurial > hg > Members > tobaru > cbc > CbC_llvm

comparison lib/CodeGen/AsmPrinter/DwarfUnit.h @ 33:e4204d083e25